Go. See. This. Movie. If you have even a sliver of geek or B-movie fan in you or even just want to see spectacle blockbusters that take joy in their premise again instead of being constantly grimy and dour, do not miss this movie. It's a note-perfect homage/tribute/mashup/fan film for mecha anime and Japanese monster movies alike, mixed in with Hollywood summer blockbuster sensibilities - but from those halcyon days when summer blockbusters could actually be good and fun. It wears Neon Genesis Evangelion on its sleeve in many ways, but unlike that show it keeps the "giant robots versus Godzilla" aspect front and center and develops its characters through that, instead of devolving into navel-gazing.
My God you guys, do not miss this movie.